Igniting device for gas-engines.



R. V. CORNELL.

IGNITING DEVICE FOR GAS ENGINES.

APPLICATION FILED JUNE 23, 1911.

1,070,874, Patented Au 19,1913.

UNITED STATES PATENT OFFICE.

RAY V. CORNELL, OF CENTURIA, WISCONSIN.

IGNITING DEVICE FOR GAS-ENGINES.

To all whom it may concern Be it known that I, RAY V. CORNELL, a citizen of the United States, residing at Centuria, in the county of Polk and State of WVisconsin, have invented new and useful Improvements in Igniting Devices for Gas- Engines, of which the following is a specificat-ion.

One object of the invention is to prevent the formation of carbon on the electrodes of the electric igniting devices or hydrocarbon motors.

Other objects will appear and be better understood from the following description taken in connection with the accompanying drawings, in which,

Figure 1 is a cross section of the cylinder of a gas engine also showing my igniting device in section and applied thereto. Fig. 2 is a detail end view of the rotating electrode partly in section. Fig. 3 is an end ele- Vation of the device partly in section.

For purposes of illustration I have shown the device as extending through a lateral opening in a gas engine cylinder 5 but it is to be understood that I am not to be limited to this specific application since it will be readily understood from what will appear later that the device may be applied to the other portions of engine cylinders such as the head.

The plug 6 has a flange or head 7 at the outer end thereof which bears on the cylinder and is secured thereto in any preferred manner such as by studs or bolts 8 which pass through the openings in the flange and in the cylinder 5. 4 The shaft 9 is journaled on the plug 6 and extends longitudinally of the same and at its inner end is provided with a rotating electrode a. The electrode a is herein shown to consist of a circular head peripherally provided with a plurality of threaded openings which receive the screw threaded pins 11 which constitute the wiping contact members. The outer ends of the pins 11 are beveled as at 12 and by virtue of their screw threaded engagement with the head 10 these pins may be adjusted so as to extend various distances from the periphery of the head or may be readily removed and placed with new pins whenever desired.

The rock shaft 13 extends at one end through a bushing 14 which is arranged in a seat in the head or flange 7 and insulated therefrom as shown at 15. The rock shaft Specification of Letters Patent.

Application filed June 23, 1911.

Patented Aug. 19,1913. Serial No. 634,848.

13 is also insulated from the plug 6 as shown at 16. The oscillated electrode 17 is secured to the inner end of the rock shaft 13 and extends into the path of movement of the pins 11.

The bushing 14 has a binding post 18 and the outer end of the rock shaft 13 is provided with an expansion spring 19 which has a bearing on a stud 21 carried by the bushing let. The spring 19 yieldingly holds the rock shaft 13 so that one end of the elect-rode 17 extends into the space between the adjustable pins 11.

The shaft 9 may be rotated by any preferred mechanism operated from the main shaft of the motor and for purposes of illustration I have shown the outer end of the shaft 9 as provided with superimposed ratchet wheels 22 and 23. A spring-pressed pawl 24 engages with the inner ratchet wheel 22 and serves to prevent return movement of the same, while any suitable mechanism may be employed to impart a step by step movement to the shaft 9 by engaging with the outer ratchet wheel 23.

The circuit extends by the conducting wire 25 connected to the binding post 18, the cylinder 5, plug and shaft 9 also being in the circuit. Since the rock shaft is insulated from the plug the circuit will not be closed until one of the pins engages with the oscillating electrode 17 and. moves over the face thereof thus causing the oscillating electrode to move outwardly until the pin clears the same whereupon the electrode will move inwardly under the action of the spring 19 thus causing a quick break in the circuit and the consequent spark.

By virtue of the beveled ends of the pins 11 successively wiping the adjacent surface of the oscillating electrode it will be seen that carbon adhering thereto will not be crushed between the bearing surface of the pins and electrode 17 but on the contrary will be pushed before the pins as their beveled ends pass over the electrode 17. It will be further observed that the pins may be removed and ground whenever desired and any difference in length resulting from such grinding may be compensated for by screwing the pins less farther into the openings than before.

Although I have shown and described one embodiment of the invention it is to be understood that I am not to be limited to the specific structure herein shown and described nor to the particular arrangement of parts since various changes may be made, in the scope of the appended claim Without departing from the spirit or sacrificing any of the advantages of the invention.

What I claim as new is:

In a gas engine igniting device, the combination With a cylinder having an opening in one Wall thereof, of a plug arranged in said opening, a bushing extending through said plug and insulated therefrom, a rock shaft extending through the bushing, a stud carried by the bushing, a spring coiled about said rock shaft and bearing on said stud, an electrode on the inner end of said rock shaft,

a rotatable shaft journaled in said plug, a

plurality of radial contact pins adjustably secured to one end of said shaft and adapted to successively contact With the first named electrode and move the rock shaft against the action of said spring, and means including superimposed ratchet Wheels at the outer end of said rotatable shaft for preventing rotation thereof in one direction and imparting a step by step movement thereto.

In testimony whereof I ai'fix my signature in presence of two Witnesses.

RAY V. CORNELL.

lVitnesses:

Gno. W. VVILD, M. A. PAULSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

